100553427 has 16 divisors (see below), whose sum is σ = 160427680. Its totient is φ = 61878816.

The previous prime is 100553423. The next prime is 100553473. The reversal of 100553427 is 724355001.

It is a happy number.

100553427 is a `hidden beast` number, since 100 + 5 + 534 + 27 = 666.

It is not a de Polignac number, because 100553427 - 2² = 100553423 is a prime.

It is a super-2 number, since 2×100553427² = 20221983362888658, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100553427.

It is not an unprimeable number, because it can be changed into a prime (100553423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142888 + ... + 143589.

It is an arithmetic number, because the mean of its divisors is an integer number (10026730).

Almost surely, 2^100553427 is an apocalyptic number.

100553427 is a deficient number, since it is larger than the sum of its proper divisors (59874253).

100553427 is a wasteful number, since it uses less digits than its factorization.

100553427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286499 (or 286493 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 100553427 is about 10027.6331703947. The cubic root of 100553427 is about 465.0135688028.

The spelling of 100553427 in words is "one hundred million, five hundred fifty-three thousand, four hundred twenty-seven".